15.3. Check of the unilateral vacuum valve
When checking the unilateral valve, the valve has to be in a vacuum hose.
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The unilateral valve is pressed in a vacuum hose in a certain situation. |
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- The vacuum pump check functioning of the unilateral valve.
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| Connection of the vacuum pump |
Criteria |
| From the vacuum amplifier of brakes |
Vacuum is created and keeps |
| From an inlet collector (In) |
Vacuum is not created |
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If the unilateral valve is faulty, replace it together with a vacuum hose. |
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